Smoke-consuming furnace.



No. 657,324. l Y Patented Sept.`4`, i900. E.'TH0II'NT0Nl & G. S. SMITH.SMD'KE CUNSUMING FURNACE.

(Application med Mar. 14, 1900.)

(No Model.)

WIT ESSES ATTORNEYS.

Y fue nonms versus co. mmaumn., wAsmNumn, n. c.

UNITED STATES PATENT OFFICE.

EDWARD THORNTON AND GEORGE S. SMITH, OF OOITSVILLE, OHIO.

M-sMoKE-coNsUMlNG FURNACE.

SPECIFICATION forming part of Letters Patent No. 657,324, datedseptember 4, `1900.

Application filed March 14, 1900. Serial No. 8,600- (No model.)

To a/ZZ whom it may concern:

Be it known that we, EDWARD THORNTON and GEORGE S. SMITH, citizens ofthe United States of America, residing at Ooitsville, in the county ofMahoning and State of Ohio, have invented certain new and usefulImprovements in Smoke-Consuming Furnaces, of which the followingis aspecification, reference being had therein to the accompanying drawings.i

This invention relates to certain new and useful improvements insmoke-consuming furnaces, and a furnace constructed in accordance Withour invention is particularly adapted to consume all the combustiblescontained in the fuel, thereby increasing the temperature of heat andobtaining a considerable saving in the consumption of fuel.

One object of our invention is to construct a furnace of this characterwith means to supply air and steam to the fire-box from beneath thegrate-bars, causing the fireto burn more evenly and increasing theteni;`

perature of the same without an additional charge of fuel for Obtainingthis purpose, or, in other words, thoroughly consuming all thecombustibles contained in the fuel, thereby Obtaining this increasedtemperature of generating steam more rapidly at a considerable saving inthe consumption of fuel.

A further object of the invention is to provide the bridge-wall of thefurnace with a."

series of steam and air ejectors for projecting air and steam againstthe Vflame as it'V crosses the bridge-wall'of the furnace, therebyarresting the smoke and combustibles as the same are drawn toward thefuel and causing the consumption of the same, furthermore, arranging atthe top of the bridge-wall in alinement with the steam and air ejectorsa separate steam and air ejector, through which the air is projected andmeets the air and steam as they leave the ejectors of the bridgewall,this assisting materially in the consuming of the fuel and combustiblesas the same are drawn toward the fuel, furthermore forcing the same to agreat extent back upon the fire, which also assists in the consumptionofthe combustibles contained in the fuel.

A further object of our inventionis to construct a furnace of thischaracter which will be extremely simple in construction, strong,durable, efficient in its operation, and comparatively inexpensive tomanufacture.

With the above and other objects in view the invention finally consistsin the novel construction, combination, and arrangement of parts to behereinafter more fully described, and specifically pointed out in theclaim.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate corrresponding parts throughout theseveral views, in Which- Figure 1 is a side View, partly in section, ofa furnace equipped with our improved device.Y Fig. 2 is a crosssectionalView, partly in section, taken on the line 1 1 of Fig. 1.

Referring to the drawings by reference-numerals, 1 indicates the sidewalls of a furnace, 2 the rear Walls, and 3 the front walls.

The reference-numeral 5 indicates the door to the fire-box, and 6 thedoor to the ash-pit.

The furnace is provided with a series of suitablegrate-bars 7, abridge-Wall S, and a boiler 9, secured therein in any desirable manner.

Arranged Within the bridge-wall 8 is a series of vertical steam and airejectors 10, connected to a supply-pipe l1, which in turn is connectedby means of a union'l2 to a steamfeed pipe 13 and air-supply 14.' Theunion 12 and'its connections are provided with a suitable cut-off 15.The vertical steam and air ejectors terminate at the top of thebridgewall, as shown, and arranged above the same and extendingtransversely across the furnace is an air-pipe 16, connected totasuitable source of air-supply (not shown) and Which is provided with aseries of perforations 17 to permit of the projecting of air therefromagainst the steam andair as they leave the vertical ejectors 10. y

Arranged beneath the grate-bars of the furnace is a steam and air pipe18, connected by a union 19 to the air-pipe 14 and steam-supply pipe1'3, the union 19 and its connections being provided With a cut-off 20.The air and steam pipe 18 has arranged therein a series of perforations21 to permit of the projecting therefrom of the steam and air up throughthe grate-bams.and through the live," this materallfveausing? the'ireiblburxiliofe evenlyand'i'ncreasing the temperature ol""th"el sameWithout an additional charge of fuel for obtaining such purpose.

Thenoperaion of the device isas follows; Assuming thatjtheire is'uarraugediupen tliefgrate, the smoke, combustibles, and Haine as" theyare drawn toward the.lue are` arrested by. means of the steam andaTror'nthe verl tical ejectors 11 and the air from the air-pipe 17, thiscreatinga means fonforcingltbecoln:

suming the same.4 l Y It is thought that the many advantages of ourfimproved constructionastowthe consumpf tionof-com bustibles containedinfilel,thereby` obtaining a considerable savingvof" fuel,y :can:

' bereadily understoodfrom the appliances g `used.iu-connection .with afurnace,*asset-forth in the foregoing description and illxls'tratedLin.theaccompanying;drawings;andit will-lie` noted that vario'uschangesmay bei made: in J the'details of construction lWithout departingfromlthe generalspirit of ourl invention.

steam and hotainemitted:from-f-the'injectors.

Inftest-ixnohyf whereof# v-v'e'A affix' our signa-Y

